Elevator



Patented Aprl 13, 1926.

BES-T ;wlLA

PATENT -FF1CE.

MIL'IION BABUOH, LOS ANGELES, CALIFOBNIA, ASSIGNOR T0 WESTI'NGHOUSE'ELEC'IBIC & KANUFACTURING COMPANY, A COBEORATION OF PENNSYLVANIA.

ELEVATOB.

Applicatipn flled October 10, 1821. Serie). N0. 508,869.

T0 all w/zom z't mqy conerfl:

Be it known tlmt I, M1LTON BARUCH, 21 citizcn cf tl1e Unificl States,residing ab Los .-\ngeles, in t-he county of Los Angeles and.

State 01 Californiiz, have inventad a new and nseful'lm] rmement inElevators, of which the'following is a specificati0n- My in ventionrelates to elevators and it may be a lvanlageously applied to passengereevators ope'ratix'xg in buildings, although, 0f comse, being equallyapplicable to freight elevators and hoists of various descriptions.

In tl1e lollow ving specification the applicaiio'n of my invention' to aPassenger elevator will be describ ed 'lhe princi al dbjectof theinvention is to provide, an elevgxtor wh'.h is so constructed 'thnt itwill automaticgxlly 3stume a p0sition in which the floor of tl 1rewahislevel Svith the floor of the buildi ng ilifflle event tha& the car isstopped wil:h fl1efioot-of the can'out of level w1th the-floor of thebu'ilding, P'rovided such stopping occnrs within'a certain disinnen 0fthe levcl Position, this distmice cm 5 0ithei side' 0f tl1e levelposition being hereinafcndesignatul as the leveling zone..

A fnrtl1er objeCl; of the ini*ention is t0 provide means f013'accomplis'lxing the firsh.

nzuned object qnite indepehdently of tl1e op- 0 emtor 0f the eleimtor. Astill furt-henobject 0f tlx'e inxenfz'ion is 10 provide means by whichtlie aboveobjects may be=atlained witlxut the use of sWitches o1 cmnscarried b v the cm o'r situafted in the' hatchway and \i'i th a. high ofaccuracy 3 still furtherbbject of'ihe invention is to provide meansWhereby the leveling mechanisin is lxeld out of engagement atiall timesexcept a't tl1e time or just before l;l1e time tlmt tlxe cx u comes torest.

A still further object of tl1'e invention is t0 provigle means foraccolnplishing tlxe above objeet-s Wlll(.ll will l e extremely flexiblein installafion-so flmlg'ihese nxgmis can be applied '(0 eiistin ielevntors or-nnbe readily m0 li liecl to snit nlmot any comlition metwithin 'pmct'ice.

Furth'er objects and edvantages will be mgde evident hereinaft-r-r.

plied.

Fig. 2 is an elevation on an enlarged senle showmg the leveling fingersam]. a leveling roller. y

Fig. 3 is a front elevation shoning the level1ng roller in'its snpport.

Fig. 4= is a partial section on an enlmged SCaleon a plane representeclby the line- 4-4 cf Fig. 1.

Fig. 5 is a sectio n 011 a plane reprcsente l l y the line 55 0f Fig. 2.

Fig. 6 is a diagram of c0nnection.

In tl1e form of the invention shown I provide a cm 11 wl1ieh issuspended by cables 10 which pass up to suitable counter-weiglxts andhoistin 9; mechnnism, not shown. Securcd to tlxe top of the ca1 11 is nflexible tapc 12 whih asses over sheuvcs 13, 14, 15 ancl 16, being benuttaclxed to tl1e bottom O'f the cm: The member 12 is prefembly formedof thimsteel altlmnglx any othep material lxaving sufiicient strength.flexi 15 bility aml permanence mnjr be nsecl. 'llxe cm 11 passes up mnldown in a lmtchway serving floors 17, 18 an l 19.

Sedured 011 tl1e flexible member 12 2.re a 'series of projections 20.one of fhese prejeetions' being provided for e'ach of the floors 17, 18und-.19. The pr0jections 20 consist 'of a member 21 on'wl1zgtmay betermed t-he back of tl1e member 12 an. a member 22 on the face 0f .themember 12, these members being' secnred togetl1er through holes or slotsin l-he member 12 by. menns ofbolts 23. Carried 011 u pln25 -in eaehofthe lnembexs 22 i's a. toller 26.

Euch 0f the'sheaves 13,14, 15 und 16 has a rim shaped as in Fig. 4,which is =Provided with a groove 27 to allow tlxe members 21 to pass'readily therearound. 1 ita.ted at some convenicnt point are a pair ofleveling finge rs 31 and 32. Rollers 30 tur ning about stafiionary pinsare loeated opposite lzhe figers 31 ancl 32 for' the purpose ofholdingthe voller 26 in contact with shown through the cables 10.

BES? AVA1LABLE COP\ these fingers as shown in Fig. 2. The fingers 31 and32 are calrriegd 011 pivots 33 'ancl are provided With projectinsbetween which a tension spnng 34 is stretched, this spring tending topull the extensions 35 against stops36. A contact 37 is carried by lautinsulated from auch 0f the members 35, this contacl: touching andmakingelectric al connection with a contact 39 whenever the member 35 ispushed away from the stop 36 against the action of. the spring 34. Thepivots 33 are fiXed in n. hox 40 which is carried on an arm 41 pivotedat 42 to sorne stationary position of the build- .ing structure ormcchanism; A hell crank 43 forming an extension of the arm 41 isconnected to the plunger 44 0f a magnet having a windin 45.

The methocl 0 connection can best be unclerstood from Fig. 6 in which isthe armature of the. elevator -motor which is mechanically connected toraise and 'lower the car by rneans of suitable' mechanism not The armi1-ture 50 is magnlatically linkeclwith a field 51 excited fr0m a sourcenot shown. The

'I armature lzads 52 and 53 of tl1e motor armature 50 are connected towires 54 and 55. The wire 54 is connected to 'contacts 56 ancl 57 anclthe wire i's connected t6 contacts 58 and 59. The contacts 56 and 58form par t of an up cor'1tactor 60 having a coil lthe contactor 60bein'g so constructed that the contacts 56 and-58 are Closed wheneverthe winding 61 isnergized. In the same way the contacts 57 and 59 forxnpart -0f a down contactor 62 having a winding 63. The Contacts 58 and 57areoonnecte'd to a negative wire 65. In series -with the gvire 65 israresistance 66 whichmn.y be cut in und out of circuitby means ofcontactors 67 which may be eithex: automatic'ally enetgized orwhich mabe cdntrolled by a car switch 70 in accor ance with standard practice bymeans, nol: shown.

The motor 50 01 somelportionhf the mechanism drivenbythe motoris providcd witl1 a brnke opbratcd by magnel; 71.- The contacts 37 and 39 operxtedby the finger 3].

am for convenience designated as the up contact 72 und the simila1fingerso1iexiated by l:l1e arm 32are designated as the down contact 73.The car switch 70: is provided witlr.nn operating handle 74 which mayOpcrafic an arm 75 making contact with.the.

sogxncnts 76, 7 78 79, 80 an l 81. y The opcmtmg handle 74 may he alsoattached to other fornis of control'snch, fr. examyile,

2\S pnslx lmtfong auch ns'is nsekl in automatic 0lvv::lmt The contact 81ls nonnecteql llxrongzlr 21 wirr with a wir-e 91 Connecl'ingtlxe'winding 61 h) .the (vnnl'n'nfi 72. The other l'enninnl 0l' ihn winling 61 is connected tn 3 uommon wiru 92 whivh is connrrcted t0 0netennihal. 01 'the-ninding 63, tl1e wire 92 fthe contacts57 and59 nreopened.

is also connected t0 one terniinul 0f The magnet 45, the other terxninalof which is con nectecl through a wird 96 witl1 the segments 77 am] 80.A positive wire 97 is conncctml t0 the segments 78 and 79 und so onesl(le of the contact 72 an l 73 by means 0f wiro 93. The otl1er si(le ofthe winding 63 is connected through u wire 99 with 0n0 side 0f thecontact 73 und through a wire 100 with the segxnent 76.

The mthod of operation is as follows: In the diagram 0f Fig. 6, theoperat'rng handle 74 is shown in its ml 0r neutral position, this beingthe position into wl1ich the handle is throwh when it is (lesirerl' t0stop the cm. In the event that it is desire l t0 start the car upwardly,the handle 74 is rotated in a clock-wise direction, first connecb ingthe contacts 77 and 78 togother which connects the wire 96 with thepositive side '0f the circuit. This energizes the magnet 45 which pnllsupwardlyon the core 44 and draws the b0x 40 und the fingers 31 and 320ut of the patl1 of the rllers 26. This is done for the purpose ofPrevcntlng the rollers 26 from striking aguinst the fingers 31 and 32while moving ab a high specd an(l thus causing undue wear to thefi'ngers 21ml what is more important n very di sagreeable clicklngnoise.- If the handle 74 is rotatccl further in a clockwise (lirecti0n,the contact 76 is also connectecl t0 the cont-act 78 thus con'niectingthe wire 100 with .tl1e positive downwardly. The resistance 66 maynoxwbc automatically cutout '0f circuitby the conlVhenevr it is desiredtost qp, .the handle 74 is moved back to the ofi:' position 215 shown inFig. 6, the winding 63 is de-energized fi%nd he brake magnet 7lbeing inseries with both of the windings 61 and63, the'brake is applied 'tactors67 in accordance with Standard prawhenever. 'both of these windinfgsarekleenergized. The application of the brake stops the Gar. The movingof the hamll74 the neutralpositionopens the circu1t tn the contct 77 undde-energizes thg ma'gnct 45 thus 'allwing the fingers 31 and 32 to dropint0 the position 'shown in Fig. 2 in whiclfPosition they are engagedby--one 'of the roller 26. 1n tl1e' cvent th alz tlxe car stops wit-hthe roller 26ln posiklion showr1 in Figz'. 2 'neitllhr 0f the'-fingers31- m mve lrway frmn the sfops 36 an l neither" .the contzwls 72 m 73 amclosed 'eozceptperhaps momentmily as the cnr comos to rest.

This c'entral posi-tion of the-r0llers 26 norm- BEST AVAlLABL'E COP\said fingers imperative at all times excep t when sa1(l operating handleis in the ofl position; and means independent oi said operating handleby which the aetnation of one ol said fingers causes Sald contro'ller t0assumc a position t0 move tlxe rar dovvn und tlw nein-- ation 0f theother finger Causes said 001.- troller t0 assume a osition (0 movelsaidcar up.

12. In an electrlc elevator, the combination of a car; an electricmo'tor for actnatdng said car; a controllcr connected to operatej saidmotor in a forward 01' in a reverse d1rectxon; an operatmg handlecarr1ed 1-n szud car by whmh an operator can set sa1d controller tooperate said nlotor in either direction; a pair of fingers; .a strip 'of flexible flat material attached to seid ear and passing in proximityto seid fingers; aseries of projections. on said flexible-strip each soconstituted und plaeed as to actnate one of said fingers when the .ca'rstops a little above; a predetermined point and to actuate the otherfinger iw hei1 the car stops a little below a predeterm1ned 'point;means for rendering said fingen; in-

operative als all times except when said operating handle is in Ehe ofl"position; and means independent cf said operating handle by which theactuati on of one of Said fingers causes said controller to assume .aposition to move the car down and the actuation cf the other fingercanses sajd controller to assume a osition to move 'said car up.

13. In an electric celvator, the combination of: a car; an electric'motor for actuating said car; a. controllerco nnected to operalze saidinotor in a forward 'or in a reverse direction; an operating handlearried.in said car by which an operator can Set said controller tooperate said motor in either dilection; a palir of fingers; a flexiblememher attached to said car; a series 0f Projections 0n said flexiblemember each so comstituted and placed as to actuate one of said fingerswhen the car steps a little ahove a predetermined point and to actsuatetheother Enger when the car etops a little belowa pfedetermined point; amaggnet con trolled by tne mov eme nt*of 'the operat1ng handle for.drwing said fingers out of ihe path of said projectmns ab all timesexcept when. said .operating handle is in the off o1 neutral posltionand means independent of said 0perating handle by which the nc tnationof oneof said fingers ca nses said controller to 8.ssume a posltion tomove the car down an l the actuation 026 the othe1 fingen canses saidcontroller to assnme a position tu 1n0ie said car' 14. In an electricelevator, the combihation of: acar; an electno motor for actuatmg saidcar; a conliroller eonne cted to operate said motor in a forward er in areversedh rection; an operat1n'g handle car'r1ed in saui' handle fordrawlng said fingers out of the' path of said projections ab all timesexcept when said operating handle is in the ofi o1 neutral osition; and'means independent of said Operating handle by which theactuation of oneof said fingers canses said controller to assumea position to move thecar down and the actnation of the other finger causes 'said conlsrollerto assume a p0sit1on t move said car np.

15. The combination with an elev:ilior cm and an electric motor foractuating the car,

of manually operable means for controlling the mtor, a flexible memberattached to said car, and means controlled by seid flexible mcrnber forcontrolling said motor when said manual'means is inoperatu' e.

16. The combination with an elevator car and an electric motor fo ractuating the car of manually operable means.for controllin the motor, aflexible memb'er attached to sai carand means comprising anelectro-responsive switching device controlled by said Y flexibkz memberfor controlling said inotor Wh'en said manual means is imperative.

17. The combination with' an elevator car and an electric motor foractuating the Gar, of manually operable meaixs :lfor controlling themotor, a flexible member attaehed tq said car, a plurality o'fadjustably mountejd projetztions carried by said member; and

switching mans controlled by said projections for eflecting automaticoperations of said mo fior to actuate salid car'-to predeterminedpointslof car travel.

18. 'lhe combination with an elevator car 0f manually operable means forcontrolling the motor, -a flexible menaber attaehed bo said ear, aplnrality of adjust-ably mounted projections carried by said member, andswitching 1neans controlled bysaid proji;ctions for eflecting automaticope'rat1ons of said motor to ixctnate seid 'car snbstantially and aneleetric moto1l for abtuating th e car,

to a selected level independently of said ma-nually opex;able me.ns.

' 19. "Ehe combination with an elevator ca? and an electric motor im:actuating the car of'manually opexahl a meang for controlling the motor,aiplur&yj pi switch 0perating membersactuated i1.:igipo1danee with thecar -movement, und electttisponsiYe means conlirolle d hy. said membersfor cuntrollizjxg said v BEST AV/YLBLE CP\ mean is jn0pera(- 5 ofmanually operable mcaps for controlling 'the motor, a plurality of cummembe1s actuuted m nccoidance w1th the cm movenxent,

means for co-operating with said members to'control said motor, andmeans for rentiering said cooperating means ineffective.

In bestimony whe'reof, I hzwe hereunto set my band at Los Angeles,California, this 30th day of September, 1921.

MILTON BARUCH.

